How is the flex on these two boards? Are they similar? I want and all around park board with rocker, and im deciding between these two because they both seem like what im looking for, and they both seem like very similar decks. Any suggestions??

similar.. postermania will be a beefed up artifact(graft) and horrorscope is basically a stairmaster. just remember the rome has reverse camber between the bindings and flat at the tips, the capita is flat between the bindings and has rocker at the tips.

To add to that, the Artifact 1985 is probably a truer comparison against the Horrorscope as a park board...like the Horrorscope, flat between the inserts to "reverse-jib camber" as Rome calls it. Even the Garbage Pail Kids graphics of the Artifact are more in line with the Capita line.